Which of these is a function of the placenta?

A. To bring oxygen to the cells of the uterus

B. To bring nutrients to the embryo

O C. To provide the infant with a belly button

0 D. To open the cervix for childbirth

Which benefit comes with flexibility? a. increased muscle endurance b. improved posture c. improved energy production d. prevention of muscle strains?

According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly a. spread in a continuous layer over the inner and outer surfaces of the membrane. b. confined to the hydrophobic interior of the membrane. c.

In what ways can you see microscopic organisms responding to stimuli? besides moving

When DNA replication occurs before meiosis, the original DNA strand CAG TGT CCG TAG is copied into complementary strand GTC CTA CGG ACA. What type of mutation has occurred? A) deletion B) insertion C) inversion D) substitution

Why is it important to keep your lab area clean

How do plants cells use oxygen

a researcher identifies the the nucleotide sequence AAC in a long strand of RNA inside a nucleus. in the genetic code, AAC codes for the amino acid asparagine.

In which part of a neuron is the postsynaptic membrane usually found?

Minerals must be solid, non-organic, and have a definite internal structure.

You are working with a team of scientists who are investigating the biochemical control system involved in how animals digest fats in their meals.